GB906480A - Voltage regulator and overload protection system - Google Patents

Voltage regulator and overload protection system

Info

Publication number
GB906480A
GB906480A GB38560/60A GB3856060A GB906480A GB 906480 A GB906480 A GB 906480A GB 38560/60 A GB38560/60 A GB 38560/60A GB 3856060 A GB3856060 A GB 3856060A GB 906480 A GB906480 A GB 906480A
Authority
GB
United Kingdom
Prior art keywords
transistor
diode
voltage
output voltage
collector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB38560/60A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Avco Corp
Original Assignee
Avco Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Avco Corp filed Critical Avco Corp
Publication of GB906480A publication Critical patent/GB906480A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • G05F1/569—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
    • G05F1/573—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overcurrent detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Dc-Dc Converters (AREA)

Abstract

906,480. Automatic voltage control systems. AVCO CORPORATION. Nov. 9, 1960 [Nov. 13, 1959], No. 38560/60. Class 38 (4). [Also in Group XL (c)] A voltage regulator of the series transistor type comprises a series power transistor 17, a second transistor 28 having its base coupled to an output voltage sensing circuit which includes a potentiometer 22 and having its emitter connected to a source of constant potential including a Zener diode 31, the output at the collector of transistor 28 being responsive to the deviations of the output voltage from a value predetermined by the setting of potentiometer 22, and a third transistor 37 coupling the collector of transistor 28 to the base of power transistor 17 so that the voltage drop between the emitter and collector of the power transistor is varied in response to output voltage deviations whereby the output voltage is maintained constant. A thermistor 41 and load current-sensitive diode 15 serially coupled between the base and emitter of transistor 17 respectively stabilize the output voltage with respect to ambient temperature variations and internal operating temperature variations of the power transistor. Overload protection is provided by a circuit including voltage divider resistors 44, 45 shunted across the input terminals 10, 11 and a diode 46 connected between the junction of resistors 44, 45 and the collector of transistor 17, the arrangement being such that the diode 46 is non-conducting during normal operation but becomes conducting on an overload, whereby transistors 28, 36 and 17 are rendered non-conductive and the diode 46 together with resistor 44 serves as a load across the input terminals; on removal of the overload, the diode 46 still conducts so it provides a voltage across the output terminals 12, 13 and the transistors 28, 36 and 17 are biased into conduction whereby the diode 46 again becomes non-conducting and the regulator resumes normal operation. Diodes 24, 25 in the output voltage sensing circuit protect the transistors 28, 36 and 17 should the voltage across resistor 22 rise excessively, e.g. during starting.
GB38560/60A 1959-11-13 1960-11-09 Voltage regulator and overload protection system Expired GB906480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US852854A US3026469A (en) 1959-11-13 1959-11-13 Voltage regulator and overload protection system

Publications (1)

Publication Number Publication Date
GB906480A true GB906480A (en) 1962-09-19

Family

ID=25314396

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38560/60A Expired GB906480A (en) 1959-11-13 1960-11-09 Voltage regulator and overload protection system

Country Status (3)

Country Link
US (1) US3026469A (en)
FR (1) FR1273328A (en)
GB (1) GB906480A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1233476B (en) * 1962-10-30 1967-02-02 United Aircraft Corp Short-circuit protection device
JPS5127812U (en) * 1974-07-24 1976-02-28

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204175A (en) * 1961-09-25 1965-08-31 Collins Radio Co Automatic self-starting voltage regulating device
US3211989A (en) * 1961-12-07 1965-10-12 Trw Inc Voltage regulator employing a nonlinear impedance and negative temperature coefficient impedance to prevent leakage current
US3283238A (en) * 1962-08-03 1966-11-01 Lorain Prod Corp Regulator circuitry
US3320741A (en) * 1963-08-29 1967-05-23 United Aircraft Corp Electronic fuel control system for gas turbine engines
US3311787A (en) * 1964-04-09 1967-03-28 Tracy B Gunderman Transistorized circuit breaker
US3393347A (en) * 1964-12-08 1968-07-16 James E. Webb Power supply circuit
DE1513238B1 (en) * 1965-04-07 1971-05-13 Philips Nv Control circuit with compensation for temperature-related changes in a current
US3390306A (en) * 1965-07-30 1968-06-25 Dickson Electronics Corp Dc circuit breaker including complementary feedback coupled solid state devices having trigering means in the feedback circuit
US3643153A (en) * 1968-09-24 1972-02-15 Gen Motors Corp Temperature stabilization of transistor voltage regulators
US3749936A (en) * 1971-08-19 1973-07-31 Texas Instruments Inc Fault protected output buffer
US3832627A (en) * 1971-09-25 1974-08-27 Sony Corp Transistor circuit with slow voltage rise and fast voltage fall characteristic
JPS5847881B2 (en) * 1974-01-31 1983-10-25 ソニー株式会社 Kafkahogo Cairo
DE3009192C2 (en) * 1980-03-11 1984-05-10 SEMIKRON Gesellschaft für Gleichrichterbau u. Elektronik mbH, 8500 Nürnberg Overload protection arrangement
US5408193A (en) * 1993-09-03 1995-04-18 Trimble Navigation Limited Active circuit filter for reducing conducted radiation from a load back to its power supply

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751550A (en) * 1953-10-12 1956-06-19 Bell Telephone Labor Inc Current supply apparatus
US2829334A (en) * 1953-12-01 1958-04-01 Vitro Corp Of America Current regulator
US2922945A (en) * 1956-03-30 1960-01-26 Itt Transistorized voltage regulators
US2897432A (en) * 1957-05-17 1959-07-28 Gen Electric Electrical signal regulator
US2927262A (en) * 1957-08-24 1960-03-01 Bosch Gmbh Robert Regulating apparatus with diode for generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1233476B (en) * 1962-10-30 1967-02-02 United Aircraft Corp Short-circuit protection device
JPS5127812U (en) * 1974-07-24 1976-02-28

Also Published As

Publication number Publication date
FR1273328A (en) 1961-10-06
US3026469A (en) 1962-03-20

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